function reque (arr){
  const url = location.href
  const parstr = url.substring(url.indexOf('?')+1,url.length).split('&')
  const parobj ={}
  for(i=0;j=parstr[i];i++){
    parobj[j.substring(0,j.indexOf('=')).toLowerCase()]=j.substring(j.indexOf('=')+1,j.length)
  }
  const returnval = parobj[arr.toLowerCase()]
  if(typeof(returnval)=='undefined'){
    return }else{
      return returnval
    }
}